#wrapper {
    width: 100%;
    height: 100%;
    border-radius: 10px;
    overflow: hidden; // border: 1px solid #3e58c9;
    display: flex;
    flex-direction: column;
    z-index: 2000;
    .topbar {
        //顶部标题栏
        height: 50px;
        background: #333435;
        -webkit-app-region: drag;
        padding: 0 10px;
        .btn {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            float: right;
            margin: 15px 5px;
            cursor: pointer;
            color: rgba(255, 255, 255, 0.5);
            -webkit-app-region: no-drag;
            text-align: center;
            line-height: 20px;
            i {
                font-size: 20px;
                font-weight: 600;
                position: relative;
                top: -1px;
            }
            &.close:hover {
                color: red;
            }
            &.tomax:hover,
            &.tomin:hover {
                color: #fff;
            }
            &.tomax {
                i {
                    font-size: 12px;
                }
            }
        }
    }
    .content {
        flex-grow: 1;
        height: calc(100% - 50px);
        display: flex;
        align-items: stretch;
        .left {
            flex-basis: 280px;
            width: 280px;
            display: flex;
            align-items: stretch;
            .btn {
                background: rgba(51, 52, 53, 0.7);
                flex-basis: 50px;
                width: 50px;
                display: flex;
                justify-content: center;
                flex-direction: column;
                .item {
                    font-size: 30px;
                    cursor: pointer;
                    width: 40px;
                    height: 40px;
                    border-radius: 50%;
                    text-align: center;
                    line-height: 40px;
                    background: red;
                    margin: 10px 5px;
                    font-weight: 600;
                }
            }
            .list {
                width: 230px;
                display: flex;
                height: 100%;
                flex-direction: column;
                user-select: none;
                background: #edeae8;
            }
        }
        .cont {
            flex-grow: 1;
            background: pink;
        }
        .right {
            flex-basis: 249px;
            background: #fff;
            border-left: 1px solid #edeae8;
        }
    }
}